<template>
  <section class="main">
      <input id="toggle-all" class="toggle-all" type="checkbox" v-model="isAll"/>
      <label for="toggle-all">Mark all as complete</label>
      <ul class="todo-list">
        <!-- 当任务已完成，可以给 li 加上 completed 类，会让元素加上删除线 -->
        <li :class="{completed:item.isDone}" v-for="item in list" :key="item.id">
          <div class="view">
            <input class="toggle" type="checkbox" :checked='item.isDone' @change="changeIsDone(item.id)"/>
            <label>{{item.name}}</label>
            <button class="destroy" @click="hDel(item.id)"></button>
          </div>
        </li>
      
      </ul>
    </section>
  
</template>

<script>
export default {
 props:{
  list:{
    required:true,
    type:Array
  }
 },
 methods:{
 changeIsDone(id){
  
    this.$emit('changeIsDone',id)
 },
 hDel(id){
   this.$emit('del',id)
 }
 },
 computed:{
  isAll:{
    get(){
     return this.list.every(item=>item.isDone)
    },
    set(val){
     this.$emit('isAll',val)
    }
  }
 }
  
}
</script>